Ford Electric Ranger 2001 Manual page 371

413-01-16
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST E: ECONOMY GAUGE DOES NOT OPERATE PROPERLY OR ALWAYS INDICATES +
(POSITIVE)
E7 CHECK GROUND TO INSTRUMENT CLUSTER
• With key OFF, measure the resistance between pin 6 (BK/W wire) on
instrument cluster C215 and ground.
• Is the resistance less than 5 ohms?
E8 CHECK IAA MODULE
• With key OFF, disconnect IAA module C1945.
• With key ON, check the economy gauge.
• Does the economy gauge indicate + (positive)?
E9 CHECK CIRCUIT 3408 (DB/O) FOR SHORT TO POWER
• Connect 104-Pin Breakout Box (BOB) to the IAA module C1945; leave
IAA module disconnected.
• With key ON, measure the voltage between BOB pin 22 and ground
(BOB pin 80).
• Is the voltage greater than 0 volts?
PINPOINT TEST F: DISTANCE TO EMPTY (DTE) GAUGE DOES NOT OPERATE OR INDICATES
INCORRECT DISTANCE TO EMPTY
F1 IDENTIFY SYMPTOM
• Enter the interface adapter assembly (IAA) module active command
mode DISTANCE TO EMPTY GAUGE and set the active command
DTE G to 30%.
• Does the distance to empty (DTE) gauge indicate greater than 0
miles to empty?
F2 CHECK DTE GAUGE FOR CORRECT DTE
• Set the active command DTE G to the following percentages and verify Yes =
the DTE gauge operation:
Percentage/DTE
— 12% = 0-3.2 km (0-2 miles)
— 20% = 13-16 km (8-10 miles)
— 28% = 27-34 km/h (17-21 miles)
— 40% = 40-47 km (25-29 miles)
— 48% = 64-71 km (40-44 miles)
— 56% = 81-87 km (50-54 miles)
— 64% = 97-103 km (60-64 miles)
• Is the DTE gauge OK?
F3 CHECK INTERFACE ADAPTER ASSEMBLY (IAA) MODULE
• Connect 104-Pin Breakout Box (BOB) to the IAA module and IAA
module C1945.
• Enter the IAA module active command mode DISTANCE TO EMPTY
GAUGE and set the active command DTE G to 30%.
• Set the multimeter to the frequency setting and measure the frequency
between BOB pin 98 and ground (BOB pin 80).
• Is the frequency greater than 70 Hz?
F4 CHECK CIRCUIT 3047 (Y/W) FOR OPEN
• With key OFF, disconnect instrument cluster C214.
(Continued)
Instrument Cluster
TEST STEP
TEST STEP
ACTION TO TAKE
Yes = REPAIR circuit 584 (Y
wire).
No = REPAIR the BK/W wire.
Yes = GO to E9.
No = REPLACE the IAA module.
Yes = REPAIR the DB/O wire.
No = REPLACE the instrument
cluster.
ACTION TO TAKE
GO to F2.
Yes =
GO to F3.
No =
System OK. CHECK wiring
for intermittent connections.
No = REPLACE the instrument
cluster.
Yes = GO to F4.
No = REPLACE the IAA module.
REFER to Section 412-04.
Yes = GO to F5.
2001 Ranger EV, 01/2001
413-01-16